yeah but no but sort of

vids you link show a photo being squeezed into a uv map

in blender you can make the uv map fit the pic (is t'other end of the stick lol )

look for tuts on uv maps and projection painting (in blender) when you get the hang of that then bake your "messed up " uv to the good uv

can have lots of diff uv maps on one object (good idea to name them )

is easier to do then explain and maybe take a couple of goes before it works right

is lots of tuts that explain it better then I can in here